Arc guard system



FIG. 1 is a left side elevation view of an arc guard system showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top, left and front perspective view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for an arc guard system, as shown and described. 